Blower



BLOWER Filed Sept. 10, 1927 WITNESS INVENTOR H-ESchmicll' ATT'ORNEY Patented June It), 1938 Ulll'l'l) "YATES TEEN Di l lQE HENRY F. SCHMIDT, GE LANSDOW'NE. PENNSYLVANIA, ASSIGNOR TO VJESTINGHOUSE ELECTRIC 6c IvIANUFAOTUR-ING COMPANY, A CORPORATION OF PENNSYLVANIA BLOWER Application filed September 10, 1927.

My invention relates to fluid translating apparatus, and more particularly to propeller type blowers or fans, and it has for an object lTOllHPlOVe the construction of apparatus of this character.

Apparatus of the type described is often used where spacial requirements are such that the length of the installation becomes important, so that tl e motor for driving the propeller must be placed within the dili'using cone of the propeller casing. With such an arrangement, it is necessary to remove the casing in order to gain access to the motor, and this operation further complicated by the fact that guide vanes are usually interposed in the casing between. the propeller and the motor. Hence the casing cannot be removed without iirst removing the propeller. it will readily be seen, therefore, that in order to make relatively simple repairs to the motor, it is necessary to tear down practically the entire installation.

More particularly, therefore, an object of my invention to provide a device of the type des "bed which shall be so constructed that acc may readily be had to the driving motor.

Apparatus embodying the features oi? my invention is shown in the accompanying drawing in which the single figure is an ele-- vation of a vertical blower, showing the casing in section.

In accordance with my invention, a plurality of telescopic sections are arranged to provide a casing for a blower. These sections may be extended to provide a casing of the proper length, and, should access to the motor be desired, one of the sections, prefer ably a section of the diffuser cone, may be telcscoped over an adjacent section so as to leave the motor free and unobstructed. The casing may be made of any suitable number of sections, but, preferably, only two sections are employed.

Referring now to the drawings for a better understanding or my invention, I show a vertical type blower indicated generally at 10, and comprising a propeller 11 and any suitable type of motor, such as an elastic fluid turbine 12 for driving the propeller.

Serial No. 218,658.

T he turbine may be provided with a throttle valve 13 and an exhaust connection 14. The propeller is enclosed in a casing 16 of the convergentdivergent type, and guide vanes 17 are disposed within the casing between the propeller l1 and the turbine 12.

lVith the apparatus thus far described, it will be noted that the lower portion or dif- 'lusing cone of the casing 16 extends about the turbine 12, and that the casing 16 also carries the guide vanes 17 so that in order to gain access to the turbine, it is necessary to re move the propeller and raise the casing. In order to simplify the procedure involved in gaining access to the turbine, I make the easing 16 in relatively movable sections, such as the sections 18 and 19, the upper section 18 comprising the converging portion as well as the throat and the smaller end Oil the difi'using cone and being arranged to enclose the propeller and to carry the guide vanes 16, the lower section 12 being arranged to telescope over the section 18 so that it may be raised vorthally whcncvcr it is desired to inspect the driving motor or to gain access thereto.

In order to hold the lower section 19 in the d position, I secure a suitable number of hooks 20, by means of the lugs 21, about the outer diverging surface of the section 19 and a corresponding number of eyes 22 or the like about the outer converging surface of the upper portion 18 of the casing, so that the portion 19 may be raised and, by securing the hooks E20 in the eyes 22, the lower portion 19 may be suspended in this manner from the upper portion 18. During the operation of the blower, hooks 20 are disconnected from the eyes so that the lower portion 19 rests, by gravity, on the lower outer diverging surface of the upper portion 18.

ll hile I have shown a blower of the vertical type of which, the ren'iovable section of the diffusing cone is adapted to be secured in operative position by gravity, it will be ol vlous that the casing may be disposed in a horizontal position, in which case the portion 15) could be secured in operative position by exerting a gentle pull so as to cause it to grip the diverging outer surface of the upper portion 18, in a manner similar to that in which collapsible drinking cups are held in their extended position.

While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are specifically set forth in the appended claims.

lVhat I claim is 1. The combination with a propeller and a motor for driving the propeller, of a casing comprising a plurality of relatively movable telescopic sections, guide vanes in one of said sections and adjacent said propeller, and means for securing an adjacent section to said one of said sections either in extended or in retracted position.

2. In a fluid translating device, the combination of a propeller, a prime mover connected to the propeller, a first casing section encompassing the propeller, guide vanes carried by said section, and a second casing section normally encompassing the prime mover and displaceable in order that access may be had to the latter.

3. In a fluid translating device, the combination of a propeller; power means connected to the propeller; guide vanes adjacent to the propeller; a casing encompassing the propeller, the guide vanes and the prime mover and including a divergent portion comprising a pair of telescopic divergent sections with the lowermost section disposed about and supported by the immediately preceding section; and means for retracting the lowermost section upwardly about the casing.

at. In a fluid translating device, the combination of a propeller; power means connected to the propeller; guide vanes adjacent to the propeller; a convergent-divergent casing encompassing the propeller, the guide vanes and the power means and including a divergent portion comprising a pair of telescopic divergent sections with the lowermost section disposed about and supported by the immediately preceding section; and means provided on the upper part of the casing and on the lowermost section for holding the latter in retracted position.

In testimony whereof, I have hereunto subscribed my name this 2nd day ofS'eptember,

' HENRY F. SCHMIDT, 

